US6655486B2 - Engine enclosure for construction vehicles - Google Patents

Engine enclosure for construction vehicles Download PDF

Info

Publication number
US6655486B2
US6655486B2 US09/892,621 US89262101A US6655486B2 US 6655486 B2 US6655486 B2 US 6655486B2 US 89262101 A US89262101 A US 89262101A US 6655486 B2 US6655486 B2 US 6655486B2
Authority
US
United States
Prior art keywords
engine
ambient air
muffler
cooling
fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US09/892,621
Other versions
US20020017408A1 (en
Inventor
Yushi Oshikawa
Masataka Uno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Assigned to KOMATSU LTD. reassignment KOMATSU LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: UNO, MASATAKA (DECEASED) BY HIS HEIR YURIKO UNO, OSHIKAWA, YUSHI
Publication of US20020017408A1 publication Critical patent/US20020017408A1/en
Application granted granted Critical
Publication of US6655486B2 publication Critical patent/US6655486B2/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P2001/005—Cooling engine rooms

Definitions

  • the present invention relates to an engine enclosure for a construction vehicle and, more particularly, to an engine enclosure for a construction vehicle having a screening construction, in which ambient air, as taken into an engine room from ambient air passing holes formed in an engine hood and engine side covers enclosing the engine, for cooling a heat exchanger is guided to flow to a fan without contacting with a muffler positioned in the engine room.
  • radiator cooling means of the ambient air forcing type, in which the ambient air is taken into the engine room and forced to pass the radiator to the vehicle front side.
  • the ambient air is raised in temperature by the high heat in the engine room, especially by the radiation heat from the engine exhaust muffler.
  • the radiator cooling efficiency is low.
  • a technique for improving the low cooling effect has been disclosed in Japanese Patent Laid-Open No. 74036/1975(U.S. Pat. No. 3,866,580).
  • the inside of the engine enclosure is partitioned into a chamber including the muffler and the engine and a chamber including the fan and the heat exchanger.
  • the technique of the Publication is further constructed by forming an ambient air inlet port in the enclosure of the chamber on the side of the fan and the heater exchanger, and by disposing radiation heat releasing means on the side of the muffler and the engine room.
  • An object of the invention is to provide an engine enclosure for a construction vehicle which can be simply constructed and small-sized while improving the cooling efficiency and lowering the noise.
  • an engine enclosure for a construction vehicle of the cooling type in which the cooling ambient air taken into an engine room from ambient air inlet ports formed in an engine hood enclosing the engine and in two engine side covers is forced by a fan toward a heat exchanger in front of the engine, comprising: an ambient air screening wall surrounding a muffler, which is disposed in an over-engine space defined in the engine room by the engine hood and the two engine side covers, so that the taken cooling ambient air may flow to the fan without any contact with the muffler.
  • the cooling ambient air flows to the fan without contacting with the muffler. Therefore, the air around the muffler especially at a high temperature in the engine room and the cooling ambient air to be taken from the engine hood and the engine side covers can be screened from each other to reduce the temperature rise of the cooling ambient air to be fed to the heat exchanger such as the radiator or the oil cooler. As a result, it is possible to improve the cooling efficiency.
  • the cooling ambient air taken flows to the fan without contacting with the muffler so that the chamber including the muffler and the engine and the chamber including the fan and the heat exchanger need not be isolated to make a simple construction and to reduce the size.
  • the fan RPM Revolutions Per Minute
  • the ambient air screening wall may have any construction if the cooling ambient air taken flows to the fan without contacting the muffler.
  • the ambient air screening wall around the muffler includes: a first muffler screening partition disposed in the engine hood so that the ambient air taken from the ambient air inlet port formed in the engine hood may flow without contacting with the upper face or front face sides of the muffler; and second muffler screening partitions disposed in the two engine side covers so that the ambient air taken from the ambient air inlet ports formed in the two engine side covers may flow without contacting with the two sides of the muffler.
  • the ambient air screening wall is constructed to include the first muffler screening partition disposed in the engine hood and second muffler screening partitions disposed in the two engine side covers, so that the ambient air flow, as might otherwise contact with the muffler, can be screened at a low cost by the simple construction.
  • the cooling ambient air does not flow around the muffler. Therefore, the ambient air is not exposed to the radiation from the muffler so that the cooling efficiency of the heat exchanger can be enhanced.
  • the first muffler screening partition disposed in the engine hood is constructed of an ambient air passing duct to the fan, as attached to the inner side of the engine hood in a manner to confront the ambient air inlet port of the engine hood.
  • the cooling ambient air taken from above the engine room is entrained to the fan without contacting with the muffler positioned on the outer side of the duct so that a contribution is made to the improvement in the cooling efficiency of the heat exchanger.
  • the partition confronting the muffler side of the duct is preferably inclined downward toward the fan or formed into a gentle curve.
  • the second muffler screening partitions disposed in the two engine side covers are constructed of ambient air screening plates to the muffler, as attached at a spacing from the side covers to the inner sides of the side covers in a manner to confront the ambient air inlet ports of the two engine side covers.
  • the cooling ambient air taken from the sides of the engine room flows along the ambient air screening plates so that its flow is smoothened. Moreover, the ambient air is guided to the fan without any contact thereby to lower the ambient noise.
  • the ambient air screening plates are inclined transversely obliquely from the side covers to the fan.
  • the ambient air passing duct to the fan as attached to the engine hood, has an ambient air guide portion inclined from the engine hood toward the fan while covering the upper side and the front side of the muffler.
  • the flow of the cooling ambient air taken from above the engine room is smoothened to the fan so that the cooling efficiency can be improved.
  • the ambient air screening plates to the muffler, as attached to the inner sides of the two side covers, have guide portions for guiding the ambient air flow toward the fan.
  • the flows of the cooling ambient air taken from the sides of the engine room are smoothened to the fan so that the cooling efficiency can be improved.
  • FIG. 1 is a sectional view showing a portion in the vicinity of an engine room of a vehicle body, which is provided with an engine enclosure for a construction vehicle according to an embodiment of the present invention
  • FIG. 2 is a view taken along arrow II of FIG. 1;
  • FIG. 3 is a perspective view showing the entirety of the engine enclosure of the construction vehicle of the embodiment.
  • FIG. 4 is a perspective view showing the entirety, as taken from the back, of the engine enclosure of the construction vehicle of the embodiment.
  • an engine room 2 A of a construction vehicle 2 there are arranged a radiator 3 or a heat exchanger, a fan 4 and an engine 6 sequentially in the recited order from the vehicle front. Between the radiator 3 and the fan 4 , there are arranged an oil cooler 7 and an after-cooler 8 . On the cab side of the muffler 5 , there is arranged an air cleaner 9 which is mounted on the engine 6 . On the other hand, the muffler 5 is mounted on the engine 6 by a bracket 10 .
  • An engine cover 1 acting as the engine enclosure of the construction vehicle of the embodiment is mounted on a vehicle body 2 B for covering the engine room 2 A.
  • the engine cover 1 is constructed to include: an engine hood 15 for covering the upper face of the engine room 2 A; and a set of engine side covers 16 for covering the two sides of the engine room 2 A.
  • These engine side covers 16 are formed of a right side cover 16 A, as located on the righthand side of the cab, and a left side cover 16 B, as located on the lefthand side of the cab.
  • These right and left side covers 16 A and 16 B are so hinged at 17 to the engine hood 15 as can be opened/closed.
  • the engine hood 15 is formed to include: a plate-shaped cover body 18 ; a duct 19 or a first ambient air screening partition 19 attached to the lower portion of the cover body 18 ; and an air cleaner duct 20 formed in the cover body 18 and connected to the air cleaner 9 .
  • the cover body 18 is formed into such a flat shape as is slightly converged from the vehicle front side to the vehicle cab side. At the substantially central portion of the cover body 18 , there is formed a generally L-shaped opening 18 A, in which a punching metal 23 is fitted from the back of the cover body 18 to shut the opening 18 A. Moreover, this punching metal 23 has a number of holes, which provide an upper ambient air inlet port 24 forming the ambient air passing holes.
  • an exhaust hole 18 B and an air inlet port 18 C In the vicinity of the opening 18 A of the cover body 18 , as shown in FIG. 3, there are opened an exhaust hole 18 B and an air inlet port 18 C. As shown in FIGS. 1 and 2, an exhaust pipe 11 is inserted into the exhaust hole 18 B, and air intake unit 12 is inserted into the air inlet port 18 c . Moreover, bolt holes 18 D are formed in the front side end portions, i.e., in the two widthwise ends of the cover body 18 .
  • the cover body 18 When the engine cover 1 is to be mounted on the vehicle body 2 B, the cover body 18 is placed at a predetermined position on the vehicle body 2 B. After this, bolts 13 are inserted into the bolt holes 18 D and are fastened by nuts on the side of the vehicle body 2 B. Thus, the cover body 18 and accordingly the engine cover 1 are mounted on the vehicle body 2 B.
  • the duct 19 is disposed to face the ambient air passing area of the engine hood 15 , i.e., a portion of the area of the upper ambient air inlet port 24 thereby to enclosure the outer periphery of the opening 18 A of the engine hood 15 .
  • the duct 19 is formed into a frame shape, which is composed of: a left partition 29 and a right partition 30 disposed on the two widthwise sides of the back (on the side of the engine 6 ) of the cover body 18 ; and a hood partition 31 and a side member 22 jointing the lower ends of the left and right partitions 29 and 30 , thereby to provide an air passage 26 in their space and an outlet port 21 for the cooling ambient air on their vehicle front side.
  • a wall member 27 is disposed on the end portions of the side member 22 , the left partition 29 and the hood partition 31 .
  • the hood partition 31 of the duct 19 is jointed at its one end to the side of the air cleaner duct 20 , as shown in FIG. 1 .
  • the leading end of the hood partition 31 is formed into a guide portion 19 A extending around the outer circumference of the muffler 5 and inclined obliquely downward toward the fan 4 so that the ambient air flow may be guided to the fan 4 without any contact with the muffler 5 .
  • a drip member 32 which is formed by folding a plate into a doglegged section, with its recessed side confronting the cover body 18 .
  • This drip member 32 is arranged substantially above a fan belt 4 A for turning the fan 4 so that rain drops or the like may be prevented from dripping directly on the fan belt 4 A.
  • the right side cover 16 A and the left side cover 16 B are given substantially identical structures but are formed into mirror-image shapes. Therefore, the left side cover 16 B will be mainly described in the following.
  • the left side cover 16 B is formed by folding a plate member into a shape having an edge portion 35 directed toward the engine room 2 A and slightly bulging outward, and is sized to cover the individual sides of the upper portions of the after-cooler 8 , the fan 4 , the muffler 5 , the air cleaner 9 and the engine 6 as shown in FIG. 1 .
  • a square opening 36 in which a punching metal 37 is fitted from the back of the left side cover 16 B to shut the opening 36 .
  • the numerous holes of the punching metal 37 form a transverse ambient air inlet port 38 constructing the ambient air passing holes.
  • a grip 39 To the upper position of the opening 36 , on the other hand, there is attached a grip 39 , which is grasped to open/close the left side cover 16 B.
  • the left side cover 16 B is fixed, when shut, on the vehicle body 2 B by the not-shown fastener or the like.
  • an ambient air screening plate 40 or a second screening partition having a doglegged section as is spaced from the punching metal 37 This ambient air screening plate 40 guides cooling ambient air to the fan 4 and is fixed to confront the area of a portion of the transverse ambient air inlet port 38 of the opening 36 and to have a leading end formed into a guide portion 40 A inclined obliquely transversely toward the fan 4 so as to guide the cooling ambient air.
  • the ambient air screening plate 40 is so attached that one doglegged side of its other end may be parallel to the face of the punching metal 37 .
  • This ambient air screening plate 40 is sized to cover the vertical entirety of the opening 36 and to confront a portion of the area of the opening 36 when the left side cover 16 B is closed.
  • the opening 36 in which the punching metal 37 is fitted from the back, so that the numerous holes of the punching metal 37 forms the transverse ambient air inlet port 38 constructing the ambient air passing holes.
  • the ambient air screening plate 40 To the right side cover 16 A, there is also attached the ambient air screening plate 40 .
  • the duct 19 and the two side ambient air screening plates 40 construct the ambient air flow screening wall 14 .
  • the engine cover 1 thus constructed is attached to the vehicle body 2 B.
  • the cooling ambient air is taken into the engine room 2 A, as indicated by arrow A in FIG. 1, as the fan 4 rotates.
  • the cooling ambient air taken from the upper ambient air inlet port 24 of the engine hood 15 is guided, while being kept away from any contact with the muffler 5 by the partition 31 of the duct 19 , to flow from the outlet port 21 via the air passage 26 to the fan 4 and the radiator 3 thereby to cool the radiator 3 and so on.
  • the ambient air as sucked from the transverse ambient air passing holes 38 of the right and left side covers 16 A and 16 B, flows along the ambient air screening plates 40 of the individual covers 16 A and 16 B so that it is sucked without any contact with the muffler 5 from the outlet port to the radiator 3 thereby to cool the radiator 3 and so on.
  • the inner hot air As surrounded by the duct 19 of the engine hood 15 and by the individual ambient air screening plates 40 of the right and left side covers 16 A and 16 B, does not reside but is exhausted to the atmosphere through the exhaust pipe 11 by the venturi action between the muffler 5 and the exhaust pipe 11 .
  • the ambient air flow to pass the upper face and the front face sides of the muffler 5 and the ambient air flow to pass along the side of the muffler 5 are guided to the fan 4 without any contact with the muffler 5 , respectively, by the duct 19 attached to the lower portion of the engine hood 15 and by the ambient air screening plates 40 mounted on the two side covers 16 A and 16 B.
  • the air around the muffler 5 especially at a high temperature and the ambient air to be sucked from the engine hood 15 and the side covers 16 A and 16 B can be screened from each other.
  • the cooling ambient air to be fed to the heat exchanger such as the radiator 3 or the oil cooler 7 can be suppressed in its temperature rise so that the cooling efficiency can be improved.
  • the RPM of the fan 4 can be reduced at the same heat radiation from the muffler 5 or the like so that the noise can be lowered.
  • the engine cover 1 is constructed to include the engine hood 15 and the two side covers 16 A and 16 B, and the engine hood 15 is equipped with the duct 19 having the hood partition 31 whereas each of the two side covers 16 A and 16 B is equipped with the ambient air screening plate 40 .
  • the cooling ambient air is guided to flow to the fan 4 without any contact with the muffler 5 . Therefore, the engine enclosure need not be screened into a chamber including the muffler and the engine and a chamber including the fan and the heat exchanger, so that the engine cover 1 can be given a simple structure and small-sized.
  • the drip member 32 spans between and over the left partition 29 and the right partition 30 and is arranged just above the fan belt 4 A for turning the fan 4 . Even if rain drops, therefore, it is prevented from dropping directly on the fan belt 4 A so that the fan belt 4 A can have an elongated lifetime.
  • the present invention should not be limited to the foregoing embodiment but may contain another modification if its object can be achieved.
  • the upper ambient air inlet port 24 of the engine hood 15 and the transverse ambient air inlet ports 38 of the side covers 16 A and 16 B are formed of the numerous holes of the punching metals 23 and 37 .
  • the invention should not be limited to that construction but may be modified such that lattices are made of rods in the opening 18 A of the engine hood 15 and in the openings 36 of the side covers 16 A and 16 B thereby to form the ambient air inlet holes.
  • the ambient air screening plates 40 which are disposed at the two side covers 16 A and 16 B and inclined transversely, are formed to have the doglegged sections.
  • the invention should not be limited thereto but may be exemplified by a flat plate shape. In short, it is sufficient that the ambient air screening plates 40 can guide the cooling ambient air to the fan 4 without any contact with the muffler 5 .
  • the drip member 32 is formed into the doglegged section.
  • the invention should not be limited thereto but may be exemplified by a flat plate shape. In short, it is sufficient that the drip member 32 can prevent the rain or the like from dropping directly to the fan belt 4 A. With this modification, the drip member can be easily manufactured without folding it.
  • the grip 39 is attached to the upper portions of the two side covers 16 A and 16 B.
  • the grip 39 may be attached to any position such as the lower portions.
  • the two side covers 16 A and 16 B can be opened/closed by a less power.
  • the cooling ambient air is guided to flow to the fan without any contact with the muffler by the ambient air screening walls. Therefore, the air around the muffler especially at the high temperature in the engine room and the cooling ambient air to be taken from the engine hood and the engine side covers can be screened from each other. As a result, the temperature rise of the cooling ambient air to be fed to the heat exchanger such as the radiator or the oil cooler can be reduced to improve the cooling efficiency.
  • the cooling ambient air taken is guided to flow to the fan without any contact with the muffler so that the chamber including the muffler and the engine and the chamber including the fan and the heat exchanger need not be screened from each other.
  • the engine enclosure can be simply constructed and small-sized.
  • the RPM of the fan can be reduced for a radiation thereby to lower the noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

An engine enclosure for a construction vehicle which is simply constructed and small-sized, while improving the cooling efficiency and lowering the noise. The engine enclosure including: an engine hood 15 having an ambient air inlet port 24; and engine side covers 16 having ambient air inlet ports 38. The engine enclosure is constructed to include an ambient air screening wall around a muffler 5 so that the cooling ambient air taken from the ambient air inlet ports 24 and 38 may flow to a fan without contacting with the muffler 5. With this construction, the air around the muffler and especially at a high temperature in the engine room and the cooling ambient air taken from the engine hood and the engine side covers can be screened from each other so that the temperature rise in the cooling ambient air to be fed to a heat exchanger such as a radiator can be reduced to improve the cooling efficiency.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an engine enclosure for a construction vehicle and, more particularly, to an engine enclosure for a construction vehicle having a screening construction, in which ambient air, as taken into an engine room from ambient air passing holes formed in an engine hood and engine side covers enclosing the engine, for cooling a heat exchanger is guided to flow to a fan without contacting with a muffler positioned in the engine room.
2. Related Art
If the construction vehicle such as a bulldozer is of the ambient air intake type in which a wind for cooling a radiator arranged on the vehicle front side is established by a fan, the cooling wind having passed the radiator entrains the hot air in the engine room to the operator. It is, therefore, customary to adopt radiator cooling means of the ambient air forcing type, in which the ambient air is taken into the engine room and forced to pass the radiator to the vehicle front side.
With this means being adopted, the ambient air is raised in temperature by the high heat in the engine room, especially by the radiation heat from the engine exhaust muffler. Thus, there arises a problem that the radiator cooling efficiency is low.
A technique for improving the low cooling effect has been disclosed in Japanese Patent Laid-Open No. 74036/1975(U.S. Pat. No. 3,866,580). In order to prevent the temperature of the cooling wind taken into the engine enclosure by the fan from being raised by the radiation heats from the engine and the muffler and to prevent the radiation heat from transferring to the heat exchanger such as the radiator, according to the Publication, the inside of the engine enclosure is partitioned into a chamber including the muffler and the engine and a chamber including the fan and the heat exchanger. The technique of the Publication is further constructed by forming an ambient air inlet port in the enclosure of the chamber on the side of the fan and the heater exchanger, and by disposing radiation heat releasing means on the side of the muffler and the engine room.
According to the aforementioned prior art, it is possible to attain the effects to improve the cooling efficiency and to lower the noise. In order to partition the engine enclosure to dispose the heat exchanger and the fan therein, however, it is necessary to add a separate construction of an air intake passage for introducing the ambient air into the isolated heat exchanger and fan chambers. As a result, the construction to screen or isolate the inside of the engine enclosure into the chamber for the engine and the muffler and the chamber for the heat exchanger and the fan is troubled by a problem that the engine enclosure itself is longitudinally elongated to complicate and enlarge the structure thereby to raise the manufacture cost and the final price.
SUMMARY OF THE INVENTION
An object of the invention is to provide an engine enclosure for a construction vehicle which can be simply constructed and small-sized while improving the cooling efficiency and lowering the noise.
According to the invention of a first aspect, there is provided an engine enclosure for a construction vehicle of the cooling type, in which the cooling ambient air taken into an engine room from ambient air inlet ports formed in an engine hood enclosing the engine and in two engine side covers is forced by a fan toward a heat exchanger in front of the engine, comprising: an ambient air screening wall surrounding a muffler, which is disposed in an over-engine space defined in the engine room by the engine hood and the two engine side covers, so that the taken cooling ambient air may flow to the fan without any contact with the muffler.
With the ambient air screening wall, according to the invention, the cooling ambient air flows to the fan without contacting with the muffler. Therefore, the air around the muffler especially at a high temperature in the engine room and the cooling ambient air to be taken from the engine hood and the engine side covers can be screened from each other to reduce the temperature rise of the cooling ambient air to be fed to the heat exchanger such as the radiator or the oil cooler. As a result, it is possible to improve the cooling efficiency.
By the ambient air screening wall, on the other hand, the cooling ambient air taken flows to the fan without contacting with the muffler so that the chamber including the muffler and the engine and the chamber including the fan and the heat exchanger need not be isolated to make a simple construction and to reduce the size. As a result in the improvement in the cooling efficiency, moreover, the fan RPM (Revolutions Per Minute) can be reduced at the same heat radiation thereby to lower the noise.
In the invention, the ambient air screening wall may have any construction if the cooling ambient air taken flows to the fan without contacting the muffler.
According to the invention of a second aspect, the ambient air screening wall around the muffler includes: a first muffler screening partition disposed in the engine hood so that the ambient air taken from the ambient air inlet port formed in the engine hood may flow without contacting with the upper face or front face sides of the muffler; and second muffler screening partitions disposed in the two engine side covers so that the ambient air taken from the ambient air inlet ports formed in the two engine side covers may flow without contacting with the two sides of the muffler.
In addition to the effects of the first aspect, according to this invention, the ambient air screening wall is constructed to include the first muffler screening partition disposed in the engine hood and second muffler screening partitions disposed in the two engine side covers, so that the ambient air flow, as might otherwise contact with the muffler, can be screened at a low cost by the simple construction.
On the other hand, the cooling ambient air does not flow around the muffler. Therefore, the ambient air is not exposed to the radiation from the muffler so that the cooling efficiency of the heat exchanger can be enhanced.
According to the invention of a third aspect, the first muffler screening partition disposed in the engine hood is constructed of an ambient air passing duct to the fan, as attached to the inner side of the engine hood in a manner to confront the ambient air inlet port of the engine hood.
In this invention, the cooling ambient air taken from above the engine room is entrained to the fan without contacting with the muffler positioned on the outer side of the duct so that a contribution is made to the improvement in the cooling efficiency of the heat exchanger.
In the invention, the partition confronting the muffler side of the duct is preferably inclined downward toward the fan or formed into a gentle curve.
According to the invention of a fourth aspect, the second muffler screening partitions disposed in the two engine side covers are constructed of ambient air screening plates to the muffler, as attached at a spacing from the side covers to the inner sides of the side covers in a manner to confront the ambient air inlet ports of the two engine side covers.
In this invention, the cooling ambient air taken from the sides of the engine room flows along the ambient air screening plates so that its flow is smoothened. Moreover, the ambient air is guided to the fan without any contact thereby to lower the ambient noise.
In the invention, it is preferred that the ambient air screening plates are inclined transversely obliquely from the side covers to the fan.
According to the invention of a fifth aspect, the ambient air passing duct to the fan, as attached to the engine hood, has an ambient air guide portion inclined from the engine hood toward the fan while covering the upper side and the front side of the muffler.
In this invention, the flow of the cooling ambient air taken from above the engine room is smoothened to the fan so that the cooling efficiency can be improved.
According to the invention of a sixth aspect, the ambient air screening plates to the muffler, as attached to the inner sides of the two side covers, have guide portions for guiding the ambient air flow toward the fan.
In this invention, the flows of the cooling ambient air taken from the sides of the engine room are smoothened to the fan so that the cooling efficiency can be improved.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view showing a portion in the vicinity of an engine room of a vehicle body, which is provided with an engine enclosure for a construction vehicle according to an embodiment of the present invention;
FIG. 2 is a view taken along arrow II of FIG. 1;
FIG. 3 is a perspective view showing the entirety of the engine enclosure of the construction vehicle of the embodiment; and
FIG. 4 is a perspective view showing the entirety, as taken from the back, of the engine enclosure of the construction vehicle of the embodiment.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention will be described in connection with its one embodiment with reference to the accompanying drawings.
In an engine room 2A of a construction vehicle 2, as shown in FIG. 1, there are arranged a radiator 3 or a heat exchanger, a fan 4 and an engine 6 sequentially in the recited order from the vehicle front. Between the radiator 3 and the fan 4, there are arranged an oil cooler 7 and an after-cooler 8. On the cab side of the muffler 5, there is arranged an air cleaner 9 which is mounted on the engine 6. On the other hand, the muffler 5 is mounted on the engine 6 by a bracket 10.
An engine cover 1 acting as the engine enclosure of the construction vehicle of the embodiment is mounted on a vehicle body 2B for covering the engine room 2A.
As also shown in FIGS. 2 to 4, the engine cover 1 is constructed to include: an engine hood 15 for covering the upper face of the engine room 2A; and a set of engine side covers 16 for covering the two sides of the engine room 2A. These engine side covers 16 are formed of a right side cover 16A, as located on the righthand side of the cab, and a left side cover 16B, as located on the lefthand side of the cab. These right and left side covers 16A and 16B are so hinged at 17 to the engine hood 15 as can be opened/closed.
The engine hood 15 is formed to include: a plate-shaped cover body 18; a duct 19 or a first ambient air screening partition 19 attached to the lower portion of the cover body 18; and an air cleaner duct 20 formed in the cover body 18 and connected to the air cleaner 9.
The cover body 18 is formed into such a flat shape as is slightly converged from the vehicle front side to the vehicle cab side. At the substantially central portion of the cover body 18, there is formed a generally L-shaped opening 18A, in which a punching metal 23 is fitted from the back of the cover body 18 to shut the opening 18A. Moreover, this punching metal 23 has a number of holes, which provide an upper ambient air inlet port 24 forming the ambient air passing holes.
In the vicinity of the opening 18A of the cover body 18, as shown in FIG. 3, there are opened an exhaust hole 18B and an air inlet port 18C. As shown in FIGS. 1 and 2, an exhaust pipe 11 is inserted into the exhaust hole 18B, and air intake unit 12 is inserted into the air inlet port 18 c. Moreover, bolt holes 18D are formed in the front side end portions, i.e., in the two widthwise ends of the cover body 18.
When the engine cover 1 is to be mounted on the vehicle body 2B, the cover body 18 is placed at a predetermined position on the vehicle body 2B. After this, bolts 13 are inserted into the bolt holes 18D and are fastened by nuts on the side of the vehicle body 2B. Thus, the cover body 18 and accordingly the engine cover 1 are mounted on the vehicle body 2B.
The duct 19 is disposed to face the ambient air passing area of the engine hood 15, i.e., a portion of the area of the upper ambient air inlet port 24 thereby to enclosure the outer periphery of the opening 18A of the engine hood 15.
As shown in FIGS. 2 and 4, more specifically, the duct 19 is formed into a frame shape, which is composed of: a left partition 29 and a right partition 30 disposed on the two widthwise sides of the back (on the side of the engine 6) of the cover body 18; and a hood partition 31 and a side member 22 jointing the lower ends of the left and right partitions 29 and 30, thereby to provide an air passage 26 in their space and an outlet port 21 for the cooling ambient air on their vehicle front side. Here, a wall member 27 is disposed on the end portions of the side member 22, the left partition 29 and the hood partition 31.
The hood partition 31 of the duct 19 is jointed at its one end to the side of the air cleaner duct 20, as shown in FIG. 1. The leading end of the hood partition 31 is formed into a guide portion 19A extending around the outer circumference of the muffler 5 and inclined obliquely downward toward the fan 4 so that the ambient air flow may be guided to the fan 4 without any contact with the muffler 5.
Between the left partition 29 and the right partition 30 and closer to the cover body 18, as shown in FIGS. 1 and 4, there spans a drip member 32 which is formed by folding a plate into a doglegged section, with its recessed side confronting the cover body 18. This drip member 32 is arranged substantially above a fan belt 4A for turning the fan 4 so that rain drops or the like may be prevented from dripping directly on the fan belt 4A.
The right side cover 16A and the left side cover 16B are given substantially identical structures but are formed into mirror-image shapes. Therefore, the left side cover 16B will be mainly described in the following.
The left side cover 16B is formed by folding a plate member into a shape having an edge portion 35 directed toward the engine room 2A and slightly bulging outward, and is sized to cover the individual sides of the upper portions of the after-cooler 8, the fan 4, the muffler 5, the air cleaner 9 and the engine 6 as shown in FIG. 1.
In the left side cover 16B closer to the vehicle front, as shown in FIG. 3, there is formed a square opening 36, in which a punching metal 37 is fitted from the back of the left side cover 16B to shut the opening 36. Moreover, the numerous holes of the punching metal 37 form a transverse ambient air inlet port 38 constructing the ambient air passing holes. To the upper position of the opening 36, on the other hand, there is attached a grip 39, which is grasped to open/close the left side cover 16B.
Here, the left side cover 16B is fixed, when shut, on the vehicle body 2B by the not-shown fastener or the like.
To the inner side of the left side cover 16B, there is so attached an ambient air screening plate 40 or a second screening partition having a doglegged section as is spaced from the punching metal 37. This ambient air screening plate 40 guides cooling ambient air to the fan 4 and is fixed to confront the area of a portion of the transverse ambient air inlet port 38 of the opening 36 and to have a leading end formed into a guide portion 40A inclined obliquely transversely toward the fan 4 so as to guide the cooling ambient air. In short, the ambient air screening plate 40 is so attached that one doglegged side of its other end may be parallel to the face of the punching metal 37.
This ambient air screening plate 40 is sized to cover the vertical entirety of the opening 36 and to confront a portion of the area of the opening 36 when the left side cover 16B is closed.
In the right side cover 16A, too, there is formed the opening 36, in which the punching metal 37 is fitted from the back, so that the numerous holes of the punching metal 37 forms the transverse ambient air inlet port 38 constructing the ambient air passing holes. To the right side cover 16A, there is also attached the ambient air screening plate 40.
Moreover, the duct 19 and the two side ambient air screening plates 40 construct the ambient air flow screening wall 14.
The engine cover 1 thus constructed is attached to the vehicle body 2B. When the drive of the vehicle is started, the cooling ambient air is taken into the engine room 2A, as indicated by arrow A in FIG. 1, as the fan 4 rotates. At this time, the cooling ambient air taken from the upper ambient air inlet port 24 of the engine hood 15 is guided, while being kept away from any contact with the muffler 5 by the partition 31 of the duct 19, to flow from the outlet port 21 via the air passage 26 to the fan 4 and the radiator 3 thereby to cool the radiator 3 and so on.
As indicated by arrow A in FIG. 2, the ambient air, as sucked from the transverse ambient air passing holes 38 of the right and left side covers 16A and 16B, flows along the ambient air screening plates 40 of the individual covers 16A and 16B so that it is sucked without any contact with the muffler 5 from the outlet port to the radiator 3 thereby to cool the radiator 3 and so on.
Of the air around the muffler 5, the inner hot air, as surrounded by the duct 19 of the engine hood 15 and by the individual ambient air screening plates 40 of the right and left side covers 16A and 16B, does not reside but is exhausted to the atmosphere through the exhaust pipe 11 by the venturi action between the muffler 5 and the exhaust pipe 11.
The following effects can be obtained according to the embodiment thus far described.
(1) The ambient air flow to pass the upper face and the front face sides of the muffler 5 and the ambient air flow to pass along the side of the muffler 5 are guided to the fan 4 without any contact with the muffler 5, respectively, by the duct 19 attached to the lower portion of the engine hood 15 and by the ambient air screening plates 40 mounted on the two side covers 16A and 16B. In the engine room 2A, therefore, the air around the muffler 5 especially at a high temperature and the ambient air to be sucked from the engine hood 15 and the side covers 16A and 16B can be screened from each other. As a result, the cooling ambient air to be fed to the heat exchanger such as the radiator 3 or the oil cooler 7 can be suppressed in its temperature rise so that the cooling efficiency can be improved.
(2) As a result that the cooling efficiency can be improved, as described above, the RPM of the fan 4 can be reduced at the same heat radiation from the muffler 5 or the like so that the noise can be lowered.
(3) The engine cover 1 is constructed to include the engine hood 15 and the two side covers 16A and 16B, and the engine hood 15 is equipped with the duct 19 having the hood partition 31 whereas each of the two side covers 16A and 16B is equipped with the ambient air screening plate 40. By these components, the cooling ambient air is guided to flow to the fan 4 without any contact with the muffler 5. Therefore, the engine enclosure need not be screened into a chamber including the muffler and the engine and a chamber including the fan and the heat exchanger, so that the engine cover 1 can be given a simple structure and small-sized.
(4) The cooling ambient air from the upper part to the engine room 2A flows obliquely downward along the guide portion 19A, as formed in the hood partition 31 of the duct 19, toward the fan 4. As a result, the flow is smoothened so that the ambient air is forced to the fan 4 without any collision thereby to lower the ambient noise.
(5) The ambient air from the sides to the engine room 2A flows along the ambient air screening plates 40 which are disposed at the two side covers 16A and 16B and which are transversely inclined at their leading end portions 40A toward the fan 4. As a result, the flow is smoothened so that the ambient air is forced to the fan 4 without any collision thereby to lower the ambient noise.
(6) The drip member 32 spans between and over the left partition 29 and the right partition 30 and is arranged just above the fan belt 4A for turning the fan 4. Even if rain drops, therefore, it is prevented from dropping directly on the fan belt 4A so that the fan belt 4A can have an elongated lifetime.
Here, the present invention should not be limited to the foregoing embodiment but may contain another modification if its object can be achieved.
In the embodiment, for example, the upper ambient air inlet port 24 of the engine hood 15 and the transverse ambient air inlet ports 38 of the side covers 16A and 16B are formed of the numerous holes of the punching metals 23 and 37. The invention should not be limited to that construction but may be modified such that lattices are made of rods in the opening 18A of the engine hood 15 and in the openings 36 of the side covers 16A and 16B thereby to form the ambient air inlet holes.
In the embodiment, on the other hand, the ambient air screening plates 40, which are disposed at the two side covers 16A and 16B and inclined transversely, are formed to have the doglegged sections. However, the invention should not be limited thereto but may be exemplified by a flat plate shape. In short, it is sufficient that the ambient air screening plates 40 can guide the cooling ambient air to the fan 4 without any contact with the muffler 5.
In the embodiment, moreover, the drip member 32 is formed into the doglegged section. However, the invention should not be limited thereto but may be exemplified by a flat plate shape. In short, it is sufficient that the drip member 32 can prevent the rain or the like from dropping directly to the fan belt 4A. With this modification, the drip member can be easily manufactured without folding it.
In the embodiment, on the other hand, the grip 39 is attached to the upper portions of the two side covers 16A and 16B. However, the grip 39 may be attached to any position such as the lower portions. With this modification, the two side covers 16A and 16B can be opened/closed by a less power.
According to the engine enclosure for the construction vehicle of the present invention, as has been described hereinbefore, the cooling ambient air is guided to flow to the fan without any contact with the muffler by the ambient air screening walls. Therefore, the air around the muffler especially at the high temperature in the engine room and the cooling ambient air to be taken from the engine hood and the engine side covers can be screened from each other. As a result, the temperature rise of the cooling ambient air to be fed to the heat exchanger such as the radiator or the oil cooler can be reduced to improve the cooling efficiency.
By the ambient air screening walls, on the other hand, the cooling ambient air taken is guided to flow to the fan without any contact with the muffler so that the chamber including the muffler and the engine and the chamber including the fan and the heat exchanger need not be screened from each other. As a result, the engine enclosure can be simply constructed and small-sized.
As a result of improving the cooling efficiency, moreover, the RPM of the fan can be reduced for a radiation thereby to lower the noise.

Claims (7)

What is claimed is:
1. An engine enclosure for cooling an engine of a construction vehicle, in which cooling ambient air taken into an engine room from ambient air inlet port formed in an engine hood enclosing the engine and in two engine side covers in forced by a fan toward a heat exchanger in front of the engine, comprising:
an ambient air screening wall surrounding a muffler, the ambient air screening wall being arranged above the engine in the engine room formed by the engine hood and the two engine side covers, the ambient air screening wall having a three-dimensional duct structure and directing flow of the cooling ambient air into the engine room and toward the fan without any contact with the muffler and engine.
2. An engine enclosure for cooling an engine of a construction vehicle in which cooling ambient air taken into an engine room from ambient air inlet ports formed in an engine hood enclosing the engine and in two engine side covers is formed by a fan toward a heat exchanger in front of the engine, comprising:
an ambient air screening wall surrounding a muffler, which is disposed in an over-engine space defined in the engine room by the engine hood and the two engine side covers, so that the taken cooling ambient air may flow to the fan without any contact with the muffler;
the ambient air screening wall around the muffler including:
a first muffler screening partition disposed in the engine hood so that the ambient air taken from the ambient air inlet port formed in the engine hood may flow without contacting with the upper face or front face sides of the muffler; and
second muffler screening partitions disposed in the two engine side covers so that the ambient air taken from the ambient air inlet ports formed in the two engine side covers may flow without contacting with the two sides of the muffler.
3. An engine enclosure for cooling an engine of a construction vehicle according to claim 2,
wherein the first muffler screening partition disposed in said engine hood is constructed of an ambient air passing duct to the fan, as attached to the inner side of said engine hood in a manner to confront the ambient air inlet port of the engine hood.
4. An engine enclosure for cooling an engine of a construction vehicle according to claim 2,
wherein the second muffler screening partitions disposed in said two engine side covers are constructed of ambient air screening plates to the muffler, as attached at a spacing from the side covers to the inner sides of said side covers in a manner to confront the ambient air inlet ports of said two engine side covers.
5. An engine enclosure for cooling an engine of a construction vehicle according to claim 3,
wherein said ambient air passing duct to the fan, as attached to said engine hood, has an ambient air guide portion inclined from said engine hood toward the fan while covering the upper side and the front side of said muffler.
6. An engine enclosure for cooling an engine of a construction vehicle according to claim 4,
wherein said ambient air screening plates to the muffler, as attached to the inner sides of said two side covers, have guide portions for guiding the ambient air flow toward said fan.
7. An engine enclosure for cooling an engine of a construction vehicle, in which cooling ambient air taken into an engine room from ambient air inlet ports formed in an engine hood enclosing the engine and in two engine side covers is forced by a fan toward a heat exchanger in front of the engine, comprising:
an ambient air screening wall surrounding a muffler, the ambient air screening wall being arranged above the engine in the engine room formed by the engine hood and the two engine side covers, the ambient air screening wall having a three-dimensional duct structure and directing flow of the cooling ambient air into the engine room and toward the fan without any contact with the muffler.
US09/892,621 2000-07-11 2001-06-28 Engine enclosure for construction vehicles Expired - Fee Related US6655486B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-209873 2000-07-11
JP2000209873A JP2002021565A (en) 2000-07-11 2000-07-11 Construction vehicle engine enclosure

Publications (2)

Publication Number Publication Date
US20020017408A1 US20020017408A1 (en) 2002-02-14
US6655486B2 true US6655486B2 (en) 2003-12-02

Family

ID=18706223

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/892,621 Expired - Fee Related US6655486B2 (en) 2000-07-11 2001-06-28 Engine enclosure for construction vehicles

Country Status (3)

Country Link
US (1) US6655486B2 (en)
JP (1) JP2002021565A (en)
CN (1) CN1188586C (en)

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030066209A1 (en) * 2001-10-04 2003-04-10 Giiku Takezaki Engine compartment structure of a work machine
US20040050601A1 (en) * 2002-09-12 2004-03-18 Basil Tsiaousopoulos Engine partition
US20040200649A1 (en) * 2003-04-10 2004-10-14 Osamu Yatsuda Engine compartment cover for work machine
US20040216934A1 (en) * 2003-01-27 2004-11-04 Kubota Corporation Working vehicle having a hood
US20040262061A1 (en) * 2003-06-25 2004-12-30 Case, Llc Work vehicle hood
US20050211487A1 (en) * 2004-03-29 2005-09-29 Kubota Corporation Work vehicle
US20050211483A1 (en) * 2004-03-24 2005-09-29 Deere & Company, A Delaware Corporation Under-hood engine air intake system
USD512080S1 (en) 2004-07-14 2005-11-29 Cnh America Llc Engine enclosure
US20050279549A1 (en) * 2004-06-22 2005-12-22 Cnh America Llc Skid steer rear door and chassis interlock
US20050279548A1 (en) * 2004-06-18 2005-12-22 Case America Llc Radiator mounting system
US20060000660A1 (en) * 2004-06-30 2006-01-05 Moen Richard A Drive unit enclosure assembly
US20060016632A1 (en) * 2004-07-23 2006-01-26 Kubota Corporation Lawn mower having an engine disposed rearwardly of a driver's seat
US20060144350A1 (en) * 2003-06-16 2006-07-06 Kobelco Construction Machinery Co., Ltd. Construction machine
US20060201727A1 (en) * 2005-03-11 2006-09-14 Vis Racing Sports, Inc. Rain gutter for a vehicle hood
US20070169989A1 (en) * 2006-01-20 2007-07-26 Commercial Turf Products, Ltd. Cooling system for liquid-cooled machines
US20070246278A1 (en) * 2006-04-25 2007-10-25 Agco Gmbh Utility vehicle, in particular an agricultural tractor
US20070289570A1 (en) * 2006-06-17 2007-12-20 Agco Gmbh Air guide in vehicle engine bay
US20080006460A1 (en) * 2006-07-05 2008-01-10 Mario Giovannini Hood assembly for a machine and a method of use thereof
US20080029322A1 (en) * 2006-08-04 2008-02-07 Toyota Jidosha Kabushiki Kaisha Cover for vehicle
US20080041332A1 (en) * 2006-06-30 2008-02-21 Kobelco Construction Machinery Co., Ltd Exhaust structure of construction machine
US20080048510A1 (en) * 2006-08-25 2008-02-28 Honda Motor Co., Ltd. Engine-driven work machine
US20080053312A1 (en) * 2006-08-29 2008-03-06 Caterpillar Inc. Engine noise reduction apparatus
US20080099261A1 (en) * 2006-10-31 2008-05-01 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US20080169142A1 (en) * 2007-01-16 2008-07-17 Kobelco Construction Machinery Co., Ltd. Cooling structure of construction machine
US20090013942A1 (en) * 2007-05-31 2009-01-15 Kubota Corporation Cooling Structure for a Work Vehicle
US20090229685A1 (en) * 2008-03-05 2009-09-17 Andrew Joseph Hageman Air Intake System With Flow-Diverting Plenum Box
US20100127534A1 (en) * 2008-11-26 2010-05-27 Honda Motor Co., Ltd. Engine room cover and method for mounting thereof
US20100181127A1 (en) * 2009-01-20 2010-07-22 Deere & Company Cool Air Plenum
US20100181132A1 (en) * 2009-01-20 2010-07-22 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US20100181131A1 (en) * 2009-01-20 2010-07-22 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US20100219008A1 (en) * 2008-02-22 2010-09-02 Hitachi Construction Machinery Co., Ltd. Construction machine
US20100275587A1 (en) * 2009-05-01 2010-11-04 Rodney Allen Schindler Engine Compartment Arrangement For Cleaning Diesel Particulate Filter
US20110011665A1 (en) * 2009-07-16 2011-01-20 Agco Corporation Agricultural vehicle emission aftertreatment device utilizing heat exchanger ventilation
US20120138379A1 (en) * 2010-08-02 2012-06-07 Komatsu Ltd. Work vehicle
US20120234513A1 (en) * 2011-03-16 2012-09-20 Kobelco Construction Machinery Co., Ltd. Construction machine provided with heat exchanger
US20120325570A1 (en) * 2011-06-27 2012-12-27 Caterpillar, Inc. Engine Enclosure Door
US8347994B2 (en) * 2011-04-13 2013-01-08 Deere & Company Tractor hood airflow system
US8418790B2 (en) * 2011-09-20 2013-04-16 Deere & Company Cooling package baffle or ducting
US20130228291A1 (en) * 2012-03-02 2013-09-05 Caterpillar, Inc. Replaceable Cooling System Compartment Door Screen Insert
US20130277129A1 (en) * 2012-04-24 2013-10-24 Komatsu Ltd. Bulldozer
US20130319778A1 (en) * 2012-05-29 2013-12-05 Don MacGregor Windrower Tractor with Parallel Heat Exchangers for Cooling of Engine and Associated Fluids
US8720638B1 (en) * 2013-03-29 2014-05-13 Komatsu Ltd. Bulldozer
US20140238767A1 (en) * 2013-02-22 2014-08-28 Komatsu Ltd. Wheel loader
US8827021B1 (en) * 2013-03-29 2014-09-09 Komatsu Ltd. Bulldozer
US20140250870A1 (en) * 2012-10-16 2014-09-11 Komatsu Ltd. Exhaust treatment unit
US20140262589A1 (en) * 2013-03-13 2014-09-18 Komatsu Ltd. Work vehicle
US20140292033A1 (en) * 2013-03-29 2014-10-02 Komatsu Ltd. Bullzozer
US20140291059A1 (en) * 2013-03-26 2014-10-02 Komatsu Ltd. Work vehicle and wheel loader
US8857547B1 (en) * 2013-07-19 2014-10-14 Komatsu Ltd. Wheel loader
US9033081B1 (en) * 2014-03-31 2015-05-19 Komatsu Ltd. Work vehicle
US9056547B2 (en) * 2011-06-30 2015-06-16 Hitachi Construction Machinery Co., Ltd. Work machine
US20160053463A1 (en) * 2014-08-19 2016-02-25 Komatsu Ltd. Work vehicle
US9302579B2 (en) * 2014-05-20 2016-04-05 Deere & Company Flush mounted tractor exhaust outlet
USD753195S1 (en) 2015-06-17 2016-04-05 Cnh Industrial America Llc Engine hood of an agricultural vehicle
US20160153173A1 (en) * 2014-08-19 2016-06-02 Komatsu Ltd. Work vehicle
USD765740S1 (en) 2015-06-17 2016-09-06 Cnh Industrial America Llc Engine hood of an agricultural vehicle
USD766340S1 (en) 2015-06-17 2016-09-13 Cnh Industrial America Llc Engine hood of an agricultural vehicle
US9453326B2 (en) * 2013-04-08 2016-09-27 Hitachi Construction Machinery Co., Ltd. Work machine
US9518373B1 (en) * 2015-06-08 2016-12-13 Kobelco Construction Machinery Co., Ltd. Construction machine with engine
US20170217304A1 (en) * 2014-08-21 2017-08-03 Mitsubishi Nichiyu Forklift Co., Ltd. Industrial Vehicle
US20170356406A1 (en) * 2016-06-10 2017-12-14 Cnh Industrial America Llc Exhaust stack in air intake housing
US10059192B2 (en) 2015-06-17 2018-08-28 Cnh Industrial America Llc System and method for adjusting air flow in an engine compartment of an off-road vehicle
US20190017747A1 (en) * 2017-07-12 2019-01-17 Caterpillar Inc. Cooling assembly for service vehicle

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4489375B2 (en) * 2003-05-28 2010-06-23 株式会社小松製作所 Air intake device for construction machinery
AU2004257254B2 (en) * 2003-07-11 2009-07-23 General Electric Company Silencing equipment for an air-cooling assembly
US7216734B2 (en) * 2003-09-25 2007-05-15 Kobelco Construction Machinery Co., Ltd. Construction machine
KR101127799B1 (en) * 2004-12-29 2012-03-26 두산산업차량 주식회사 Cooler for engine type forklift truck
JP4626476B2 (en) * 2005-10-14 2011-02-09 トヨタ自動車株式会社 Storage device cooling structure
US7931104B2 (en) * 2007-08-28 2011-04-26 Caterpillar Paving Products Inc. Machine having cooling system and method
US7984778B2 (en) * 2007-11-20 2011-07-26 Caterpillar Paving Products Inc. Packaging arrangement for a fluid tank for a machine
JP5253900B2 (en) * 2008-06-20 2013-07-31 Ｔｃｍ株式会社 Radiator cooling structure
JP2010090631A (en) * 2008-10-09 2010-04-22 Caterpillar Japan Ltd Utility machine
JP5370080B2 (en) * 2009-10-28 2013-12-18 コベルコ建機株式会社 Muffler mounting device with catalyst
CN102351012B (en) * 2011-08-02 2012-11-28 中联重科股份有限公司 Protective cover and vehicle
US8544582B2 (en) * 2011-10-05 2013-10-01 Kawasaki Jukogyo Kabushiki Kaisha Utility vehicle
JP5846878B2 (en) * 2011-11-30 2016-01-20 株式会社クボタ Air circulation device
JP5325316B1 (en) * 2012-04-24 2013-10-23 株式会社小松製作所 Bulldozer
GB2521284B (en) * 2012-07-25 2017-03-08 Volvo Constr Equip Ab Structure for preventing heat of muffler for contruction machine from being diffused
CN104285047B (en) * 2013-03-26 2016-01-27 株式会社小松制作所 Work Vehicles and Wheel Loaders
WO2014155676A1 (en) * 2013-03-29 2014-10-02 株式会社小松製作所 Bulldozer
JP6120689B2 (en) * 2013-06-14 2017-04-26 ヤンマー株式会社 Tractor
GB201312943D0 (en) 2013-07-19 2013-09-04 Agco Int Gmbh Fan Shroud on an Agricultural Vehicle
US9446809B2 (en) * 2013-08-05 2016-09-20 Richard Oneal Sallis Frame covering device with air vents
JP6193109B2 (en) * 2013-12-11 2017-09-06 ヤンマー株式会社 Work vehicle
JP6115960B2 (en) * 2013-12-17 2017-04-19 キャタピラー エス エー アール エル Hood equipment and work machine
WO2014185112A1 (en) 2014-02-21 2014-11-20 株式会社小松製作所 Utility vehicle
JP6132799B2 (en) * 2014-03-28 2017-05-24 ヤンマー株式会社 Work vehicle
KR102227899B1 (en) 2014-03-28 2021-03-12 얀마 파워 테크놀로지 가부시키가이샤 Work vehicle
WO2014192405A1 (en) * 2014-03-31 2014-12-04 株式会社小松製作所 Work vehicle
EP2891570B1 (en) * 2014-03-31 2017-12-06 Komatsu Ltd. Work vehicle with an engine compartment cooling unit
DE102014109811B4 (en) * 2014-07-14 2024-12-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft air guiding device for exhaust air
CN104309700B (en) * 2014-08-19 2017-02-08 国机重工集团常林有限公司 Engine hood convenient to mount and demount
US9487078B2 (en) 2014-09-04 2016-11-08 Komatsu Ltd. Vehicle body cover and work vehicle
CN105459808B (en) * 2014-09-25 2018-10-09 徐工集团工程机械股份有限公司 Piggyback pod air channel structure and engineering truck
CN104590002B (en) * 2015-01-09 2017-02-22 徐工集团工程机械股份有限公司道路机械分公司 Air guide device for vehicle engine compartment
JP5905997B2 (en) * 2015-03-10 2016-04-20 株式会社小松製作所 Work vehicle
JP6530977B2 (en) * 2015-06-24 2019-06-12 株式会社神戸製鋼所 Air intake structure of construction machine
JP6566817B2 (en) * 2015-09-29 2019-08-28 株式会社クボタ Work vehicle
KR101894343B1 (en) * 2016-05-24 2018-09-03 가부시키가이샤 고마쓰 세이사쿠쇼 Work vehicle
CN108974138B (en) * 2018-07-27 2019-10-25 台州市黄岩森亨工艺礼品厂 A kind of hood of engineering machinery
CN111188680A (en) * 2020-01-17 2020-05-22 三一汽车起重机械有限公司 Automobile crane and ventilation control method
US11648825B2 (en) * 2020-06-22 2023-05-16 Caterpillar Inc. Screen assembly for construction vehicle
JP7585160B2 (en) * 2021-08-05 2024-11-18 株式会社クボタ Work vehicles

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207250A (en) * 1963-04-24 1965-09-21 Massey Ferguson Inc Vehicle cowling and hood construction
US4086976A (en) * 1977-02-02 1978-05-02 International Harvester Company Isolated clean air chamber and engine compartment in a tractor vehicle
US4696361A (en) * 1984-03-23 1987-09-29 Owatonna Manufacturing Company Swing-up radiator and oil cooler assembly
US5551505A (en) * 1994-10-03 1996-09-03 Ford Motor Company Heat exchanger inlet duct with a center baffle
US5813491A (en) * 1995-03-07 1998-09-29 Nissan Motor Co., Ltd. Under body structure of motor vehicle
US5816351A (en) * 1995-03-31 1998-10-06 Fiat-Hitachi Excavators S.P.A. Cooling structure for construction machines
US6202777B1 (en) * 1999-05-21 2001-03-20 Deere & Company Engine enclosure with cooling air baffle
US20010007292A1 (en) * 2000-01-12 2001-07-12 Komatsu Ltd. Engine cooling air passage for construction equipment
US6390770B1 (en) * 1998-06-17 2002-05-21 Hitachi Construction Machinery Co., Ltd. Fan device and shroud
US6427798B1 (en) * 1999-07-16 2002-08-06 Kobelco Construction Machinery Co., Ltd. Construction machine with muffler cooling vent
US6431299B1 (en) * 2000-04-05 2002-08-13 Clark Equipment Company Cooling air ducting for excavator
US6435264B1 (en) * 1998-08-21 2002-08-20 Komatsu Ltd. Cooling system for working vehicle

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207250A (en) * 1963-04-24 1965-09-21 Massey Ferguson Inc Vehicle cowling and hood construction
US4086976A (en) * 1977-02-02 1978-05-02 International Harvester Company Isolated clean air chamber and engine compartment in a tractor vehicle
US4696361A (en) * 1984-03-23 1987-09-29 Owatonna Manufacturing Company Swing-up radiator and oil cooler assembly
US5551505A (en) * 1994-10-03 1996-09-03 Ford Motor Company Heat exchanger inlet duct with a center baffle
US5813491A (en) * 1995-03-07 1998-09-29 Nissan Motor Co., Ltd. Under body structure of motor vehicle
US5816351A (en) * 1995-03-31 1998-10-06 Fiat-Hitachi Excavators S.P.A. Cooling structure for construction machines
US6390770B1 (en) * 1998-06-17 2002-05-21 Hitachi Construction Machinery Co., Ltd. Fan device and shroud
US6435264B1 (en) * 1998-08-21 2002-08-20 Komatsu Ltd. Cooling system for working vehicle
US6202777B1 (en) * 1999-05-21 2001-03-20 Deere & Company Engine enclosure with cooling air baffle
US6427798B1 (en) * 1999-07-16 2002-08-06 Kobelco Construction Machinery Co., Ltd. Construction machine with muffler cooling vent
US20010007292A1 (en) * 2000-01-12 2001-07-12 Komatsu Ltd. Engine cooling air passage for construction equipment
US6431299B1 (en) * 2000-04-05 2002-08-13 Clark Equipment Company Cooling air ducting for excavator

Cited By (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030066209A1 (en) * 2001-10-04 2003-04-10 Giiku Takezaki Engine compartment structure of a work machine
US20040050601A1 (en) * 2002-09-12 2004-03-18 Basil Tsiaousopoulos Engine partition
US20040216934A1 (en) * 2003-01-27 2004-11-04 Kubota Corporation Working vehicle having a hood
US20040200649A1 (en) * 2003-04-10 2004-10-14 Osamu Yatsuda Engine compartment cover for work machine
US7143852B2 (en) 2003-04-10 2006-12-05 Komatsu Ltd. Engine compartment cover for work machine
US20060144350A1 (en) * 2003-06-16 2006-07-06 Kobelco Construction Machinery Co., Ltd. Construction machine
US7451843B2 (en) * 2003-06-16 2008-11-18 Kobelco Construction Machinery Co., Ltd. Construction machine
US20040262061A1 (en) * 2003-06-25 2004-12-30 Case, Llc Work vehicle hood
US20050211483A1 (en) * 2004-03-24 2005-09-29 Deere & Company, A Delaware Corporation Under-hood engine air intake system
US7204329B2 (en) * 2004-03-24 2007-04-17 Deere & Company Under-hood engine air intake system
US20050211487A1 (en) * 2004-03-29 2005-09-29 Kubota Corporation Work vehicle
US7575081B2 (en) * 2004-03-29 2009-08-18 Kubota Corporation Work vehicle
US20050279548A1 (en) * 2004-06-18 2005-12-22 Case America Llc Radiator mounting system
US7255189B2 (en) 2004-06-18 2007-08-14 Cnh America Llc Radiator mounting system
US7401672B2 (en) 2004-06-18 2008-07-22 Cnh America Llc Radiator mounting system
US7578365B2 (en) 2004-06-22 2009-08-25 Cnh America Llc Skid steer rear door and chassis interlock
US20050279549A1 (en) * 2004-06-22 2005-12-22 Cnh America Llc Skid steer rear door and chassis interlock
US7261173B2 (en) 2004-06-22 2007-08-28 Cnh America Llc Skid steer rear door and chassis interlock
US20070262616A1 (en) * 2004-06-22 2007-11-15 Kurtz Robert D Jr Skid steer rear door and chassis interlock
US7354099B2 (en) 2004-06-22 2008-04-08 Cnh America Llc Skid steer rear door and chassis interlock
US20060000660A1 (en) * 2004-06-30 2006-01-05 Moen Richard A Drive unit enclosure assembly
US7096987B2 (en) 2004-06-30 2006-08-29 Cnh America Llc Drive unit enclosure assembly
USD512080S1 (en) 2004-07-14 2005-11-29 Cnh America Llc Engine enclosure
US20060016632A1 (en) * 2004-07-23 2006-01-26 Kubota Corporation Lawn mower having an engine disposed rearwardly of a driver's seat
US7458434B2 (en) * 2004-07-23 2008-12-02 Kubota Corporation Lawn mower having an engine disposed rearwardly of a driver's seat
US20060201727A1 (en) * 2005-03-11 2006-09-14 Vis Racing Sports, Inc. Rain gutter for a vehicle hood
US7320299B2 (en) 2006-01-20 2008-01-22 Commercial Turf Products, Ltd. Cooling system for liquid-cooled machines
US20070169989A1 (en) * 2006-01-20 2007-07-26 Commercial Turf Products, Ltd. Cooling system for liquid-cooled machines
US8011466B2 (en) * 2006-04-25 2011-09-06 AGCO GmbH. Utility vehicle, in particular an agricultural tractor
US20070246278A1 (en) * 2006-04-25 2007-10-25 Agco Gmbh Utility vehicle, in particular an agricultural tractor
US20070289570A1 (en) * 2006-06-17 2007-12-20 Agco Gmbh Air guide in vehicle engine bay
US7690460B2 (en) * 2006-06-30 2010-04-06 Kobelco Construction Machinery Co., Ltd. Exhaust structure of construction machine
US20080041332A1 (en) * 2006-06-30 2008-02-21 Kobelco Construction Machinery Co., Ltd Exhaust structure of construction machine
US20110024213A1 (en) * 2006-07-05 2011-02-03 Caterpillar, Inc. Hood Assembly For A Machine And A Method Of Use Thereof
US20080006460A1 (en) * 2006-07-05 2008-01-10 Mario Giovannini Hood assembly for a machine and a method of use thereof
US7992665B2 (en) * 2006-07-05 2011-08-09 Caterpillar Inc. Hood assembly for a machine and a method of use thereof
US7862107B2 (en) * 2006-08-04 2011-01-04 Toyota Jidosha Kabushiki Kaisha Cover for vehicle
US20080029322A1 (en) * 2006-08-04 2008-02-07 Toyota Jidosha Kabushiki Kaisha Cover for vehicle
US7398747B2 (en) * 2006-08-25 2008-07-15 Honda Motor Co., Ltd. Engine-driven work machine
US20080048510A1 (en) * 2006-08-25 2008-02-28 Honda Motor Co., Ltd. Engine-driven work machine
AU2007290788B2 (en) * 2006-08-29 2012-12-20 Caterpillar Inc. Engine noise reduction apparatus
WO2008027127A1 (en) * 2006-08-29 2008-03-06 Caterpillar Inc. Engine noise reduction apparatus
US20080053312A1 (en) * 2006-08-29 2008-03-06 Caterpillar Inc. Engine noise reduction apparatus
US7861822B2 (en) 2006-08-29 2011-01-04 Caterpillar Inc Engine noise reduction apparatus
WO2008055216A3 (en) * 2006-10-31 2008-10-09 Enviro Cool Inc Air management system for truck
US9470135B2 (en) 2006-10-31 2016-10-18 Enviro-Cool, Inc. Air management system for under-hood heat control
US20090277706A1 (en) * 2006-10-31 2009-11-12 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
KR101422548B1 (en) 2006-10-31 2014-07-24 엔바이로-쿨, 인코포레이티드. Air Management System For Heavy Duty Truck Under-Hood Heat Control
US8556013B2 (en) 2006-10-31 2013-10-15 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US20080099261A1 (en) * 2006-10-31 2008-05-01 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
CN101547809B (en) * 2006-10-31 2013-07-17 环境冷却技术股份有限公司 Air management system for heavy duty truck
AU2007313695B2 (en) * 2006-10-31 2012-07-05 Enviro-Cool, Inc. Air management system for truck
US7537072B2 (en) * 2006-10-31 2009-05-26 Enviro-Cool, Inc. Air management system for heavy duty truck under-hood heat control
US20080169142A1 (en) * 2007-01-16 2008-07-17 Kobelco Construction Machinery Co., Ltd. Cooling structure of construction machine
US20090013942A1 (en) * 2007-05-31 2009-01-15 Kubota Corporation Cooling Structure for a Work Vehicle
US7559295B2 (en) * 2007-05-31 2009-07-14 Kubota Corporation Cooling structure for a work vehicle
US20100219008A1 (en) * 2008-02-22 2010-09-02 Hitachi Construction Machinery Co., Ltd. Construction machine
US8550198B2 (en) * 2008-02-22 2013-10-08 Hitachi Construction Machinery Co., Ltd. Construction machine
US7861814B2 (en) * 2008-03-05 2011-01-04 Deere & Company Air intake system with flow-diverting plenum box
US20090229685A1 (en) * 2008-03-05 2009-09-17 Andrew Joseph Hageman Air Intake System With Flow-Diverting Plenum Box
US8302718B2 (en) * 2008-11-26 2012-11-06 Honda Motor Co., Ltd. Engine room cover and method for mounting thereof
US20100127534A1 (en) * 2008-11-26 2010-05-27 Honda Motor Co., Ltd. Engine room cover and method for mounting thereof
US8256556B2 (en) * 2009-01-20 2012-09-04 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US9096121B2 (en) * 2009-01-20 2015-08-04 Deere & Company Cool air plenum
US20100181131A1 (en) * 2009-01-20 2010-07-22 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US8607916B2 (en) * 2009-01-20 2013-12-17 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US20100181132A1 (en) * 2009-01-20 2010-07-22 Yamaha Hatsudoki Kabushiki Kaisha Vehicle shroud
US20100181127A1 (en) * 2009-01-20 2010-07-22 Deere & Company Cool Air Plenum
US8186153B2 (en) * 2009-05-01 2012-05-29 Deere & Company Engine compartment arrangement for cleaning diesel particulate filter
US20100275587A1 (en) * 2009-05-01 2010-11-04 Rodney Allen Schindler Engine Compartment Arrangement For Cleaning Diesel Particulate Filter
US8167067B2 (en) * 2009-07-16 2012-05-01 Agco Corporation Agricultural vehicle emission aftertreatment device utilizing heat exchanger ventilation
US20110011665A1 (en) * 2009-07-16 2011-01-20 Agco Corporation Agricultural vehicle emission aftertreatment device utilizing heat exchanger ventilation
US20120138379A1 (en) * 2010-08-02 2012-06-07 Komatsu Ltd. Work vehicle
US8505661B2 (en) * 2010-08-02 2013-08-13 Komatsu Ltd. Work vehicle with engine compartment and exhaust gas treatment arrangement
US8646553B2 (en) * 2011-03-16 2014-02-11 Kobelco Construction Machinery Co., Ltd. Construction machine provided with heat exchanger
US20120234513A1 (en) * 2011-03-16 2012-09-20 Kobelco Construction Machinery Co., Ltd. Construction machine provided with heat exchanger
US8347994B2 (en) * 2011-04-13 2013-01-08 Deere & Company Tractor hood airflow system
AU2012202045B2 (en) * 2011-04-13 2014-07-24 Deere & Company Tractor hood airflow system
US20120325570A1 (en) * 2011-06-27 2012-12-27 Caterpillar, Inc. Engine Enclosure Door
US8893840B2 (en) * 2011-06-27 2014-11-25 Caterpillar Inc. Engine enclosure door
US9056547B2 (en) * 2011-06-30 2015-06-16 Hitachi Construction Machinery Co., Ltd. Work machine
US8418790B2 (en) * 2011-09-20 2013-04-16 Deere & Company Cooling package baffle or ducting
US20130228291A1 (en) * 2012-03-02 2013-09-05 Caterpillar, Inc. Replaceable Cooling System Compartment Door Screen Insert
US8783398B2 (en) * 2012-03-02 2014-07-22 Caterpillar Inc. Replaceable cooling system compartment door screen insert
US20130277129A1 (en) * 2012-04-24 2013-10-24 Komatsu Ltd. Bulldozer
US8931585B2 (en) * 2012-04-24 2015-01-13 Komatsu Ltd. Bulldozer
US20130319778A1 (en) * 2012-05-29 2013-12-05 Don MacGregor Windrower Tractor with Parallel Heat Exchangers for Cooling of Engine and Associated Fluids
US8936122B2 (en) * 2012-05-29 2015-01-20 Macdon Industries Ltd. Windrower tractor with parallel heat exchangers for cooling of engine and associated fluids
US20140250870A1 (en) * 2012-10-16 2014-09-11 Komatsu Ltd. Exhaust treatment unit
US8899017B2 (en) * 2012-10-16 2014-12-02 Komatsu Ltd. Exhaust treatment unit
US8936128B2 (en) * 2013-02-22 2015-01-20 Komatsu Ltd. Engine room of a wheel loader
US20140238767A1 (en) * 2013-02-22 2014-08-28 Komatsu Ltd. Wheel loader
US8857557B2 (en) * 2013-03-13 2014-10-14 Komatsu Ltd. Work vehicle
US20140262589A1 (en) * 2013-03-13 2014-09-18 Komatsu Ltd. Work vehicle
US9016428B2 (en) * 2013-03-26 2015-04-28 Komatsu Ltd. Work vehicle and wheel loader
US20140291059A1 (en) * 2013-03-26 2014-10-02 Komatsu Ltd. Work vehicle and wheel loader
US8827021B1 (en) * 2013-03-29 2014-09-09 Komatsu Ltd. Bulldozer
US8973976B2 (en) * 2013-03-29 2015-03-10 Komatsu Ltd. Bulldozer
US8720638B1 (en) * 2013-03-29 2014-05-13 Komatsu Ltd. Bulldozer
US20140292033A1 (en) * 2013-03-29 2014-10-02 Komatsu Ltd. Bullzozer
US9453326B2 (en) * 2013-04-08 2016-09-27 Hitachi Construction Machinery Co., Ltd. Work machine
US8857547B1 (en) * 2013-07-19 2014-10-14 Komatsu Ltd. Wheel loader
US9033081B1 (en) * 2014-03-31 2015-05-19 Komatsu Ltd. Work vehicle
US9302579B2 (en) * 2014-05-20 2016-04-05 Deere & Company Flush mounted tractor exhaust outlet
US20160053463A1 (en) * 2014-08-19 2016-02-25 Komatsu Ltd. Work vehicle
US20160153173A1 (en) * 2014-08-19 2016-06-02 Komatsu Ltd. Work vehicle
US9631342B2 (en) * 2014-08-19 2017-04-25 Komatsu Ltd. Work vehicle
US9528244B2 (en) * 2014-08-19 2016-12-27 Komatsu Ltd. Work vehicle
US20170217304A1 (en) * 2014-08-21 2017-08-03 Mitsubishi Nichiyu Forklift Co., Ltd. Industrial Vehicle
US10377227B2 (en) * 2014-08-21 2019-08-13 Mitsubishi Logisnext Co., LTD. Industrial vehicle
US10940752B2 (en) * 2014-08-21 2021-03-09 Mitsubishi Logisnext Co., LTD. Industrial vehicle
US9518373B1 (en) * 2015-06-08 2016-12-13 Kobelco Construction Machinery Co., Ltd. Construction machine with engine
USD766340S1 (en) 2015-06-17 2016-09-13 Cnh Industrial America Llc Engine hood of an agricultural vehicle
USD765740S1 (en) 2015-06-17 2016-09-06 Cnh Industrial America Llc Engine hood of an agricultural vehicle
USD753195S1 (en) 2015-06-17 2016-04-05 Cnh Industrial America Llc Engine hood of an agricultural vehicle
US10059192B2 (en) 2015-06-17 2018-08-28 Cnh Industrial America Llc System and method for adjusting air flow in an engine compartment of an off-road vehicle
US20170356406A1 (en) * 2016-06-10 2017-12-14 Cnh Industrial America Llc Exhaust stack in air intake housing
US10544761B2 (en) * 2016-06-10 2020-01-28 Cnh Industrial America Llc Exhaust stack in air intake housing
US20190017747A1 (en) * 2017-07-12 2019-01-17 Caterpillar Inc. Cooling assembly for service vehicle
US10563925B2 (en) * 2017-07-12 2020-02-18 Caterpillar Inc. Cooling assembly for service vehicle

Also Published As

Publication number Publication date
JP2002021565A (en) 2002-01-23
US20020017408A1 (en) 2002-02-14
CN1337523A (en) 2002-02-27
CN1188586C (en) 2005-02-09

Similar Documents

Publication Publication Date Title
US6655486B2 (en) Engine enclosure for construction vehicles
US5689953A (en) Cooling system for a liquid-cooled engine
EP2522826B1 (en) Tractor hood airflow system
US4241702A (en) Noise-proof and air-cooled enclosure for an engine
US10655577B2 (en) Intake structure for vehicle engine
JP5631360B2 (en) Intake / exhaust structure of engine-driven work machines
US7077078B2 (en) Engine cooling structure
US20030121638A1 (en) Vehicle with heat exchanger unit arranged near the passenger compartment
CN1989322B (en) Engine
US20060144637A1 (en) Sound-attenuating enclosure with integral cooling ducts
JP4305999B2 (en) Air conditioner outdoor unit
JP4238129B2 (en) Soundproof engine driven work machine
JP5910592B2 (en) Engine unit
JPH045122A (en) Engine type forklift cooling device
JP2019108859A (en) Engine generator
JP4399329B2 (en) engine
JP2860557B2 (en) Gas turbine power plant package
JP4489375B2 (en) Air intake device for construction machinery
JP5832180B2 (en) Transportation refrigeration equipment
JP5060405B2 (en) Engine working machine
EP4530108A1 (en) Agricultural vehicle comprising engine bonnet with aeration grilles
JPH09226630A (en) Hot air exhaust structure for cooler condenser
JP3702061B2 (en) Low temperature showcase
JPH063155Y2 (en) Engine work machine assembly
WO2010066108A1 (en) Chassis structure for electric generating set

Legal Events

Date Code Title Description
AS Assignment

Owner name: KOMATSU LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OSHIKAWA, YUSHI;UNO, MASATAKA (DECEASED) BY HIS HEIR YURIKO UNO;REEL/FRAME:012253/0650;SIGNING DATES FROM 20011001 TO 20011003

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20151202